package com.qd.panda.service.park;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.cdqidi.constant.ConstantDto;
import com.cdqidi.db.BaseService;
import com.cdqidi.dto.CacheKey;
import com.cdqidi.excel.ExcelExport;
import com.cdqidi.excel.util.ExportPage;
import com.cdqidi.exception.ApiException;
import com.cdqidi.util.RedisTemplateUtil;
import com.qd.common.panda.domain.entity.carpark.CarParkTimeDTO;
import com.qd.panda.mapper.park.CarParkTimeMapper;
import com.qd.panda.model.CarParkTime;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.time.LocalTime;
import java.time.format.DateTimeFormatter;
import java.util.*;

import static java.util.stream.Collectors.toList;
import static java.util.stream.Collectors.toSet;

/**
 * 停车时段
 *
 * @author sjk
 */
@RequiredArgsConstructor
@Service
@Slf4j
public class CarParkTimeService extends BaseService<CarParkTimeMapper, CarParkTime> {

    private static final String PREFIX_ID = "panda_car_park_time_tId_{0}";
    private static final String PREFIX_UNIQUE_PANDA_CAR_PID = "panda_car_park_time_pId_{0}";

    private final RedisTemplateUtil<CarParkTime> redisTemplateUtil;
    @Resource
    private HttpServletResponse response;


    /**
     * 保存
     *
     * @param dto 页面对象
     * @return 页面对象
     */
    @Transactional(rollbackFor = Exception.class)
    public CarParkTimeDTO save(CarParkTimeDTO dto) {
        checkUnique(dto);
        final CarParkTime model = dtoToModel(dto);
        try {
            if (super.save(model)) {
                return modelToDto(model);
            }
            throw new ApiException("添加失败");
        } finally {
            clearCache(model);
            model.freeData();
        }
    }

    /**
     * 修改
     *
     * @param dto 页面对象
     * @return 页面对象
     */
    @Transactional(rollbackFor = Exception.class)
    public CarParkTimeDTO update(CarParkTimeDTO dto) {
        checkUnique(dto);
        final CarParkTime historyModel = Optional.ofNullable(getById(dto.getTId())).orElseThrow(() -> new ApiException("ID不存在,不能更新"));
        final CarParkTime model = dtoToModel(dto);
        try {
            if (super.updateById(model)) {
                return modelToDto(model);
            }
            throw new ApiException("更新失败");
        } finally {
            clearCache(model);
            clearCache(historyModel);
            historyModel.freeData();
            model.freeData();
        }
    }

    /**
     * 批量添加
     *
     * @param mList 数据库对象
     */
    @Transactional(rollbackFor = Exception.class)
    public void saveBatch(List<CarParkTime> mList) {
        try {
            if (!super.saveBatch(mList)) {
                throw new ApiException("批量添加失败");
            }
        } finally {
            clearCaches(mList);
        }
    }

    /**
     * 批量更新
     *
     * @param mList 数据库对象
     */
    @Transactional(rollbackFor = Exception.class)
    public void updateBatchIds(List<CarParkTime> mList) {
        final List<String> ids = mList.stream().map(CarParkTime::getTId).collect(toList());
        final List<CarParkTime> historyModelList = checkIds(ids);
        try {
            if (!super.updateBatchById(mList)) {
                throw new ApiException("批量更新失败");
            }
        } finally {
            clearCaches(historyModelList);
            historyModelList.clear();
            ids.clear();
        }
    }

    /**
     * 删除，单个
     *
     * @param tId 主键
     */
    @Transactional(rollbackFor = Exception.class)
    public void removeById(String tId) {
        final CarParkTime model = Optional.ofNullable(getById(tId)).orElseThrow(() -> new ApiException("数据不存在,不能删除"));
        try {
            if (!super.removeById(tId)) {
                throw new ApiException("删除失败");
            }
        } finally {
            clearCache(model);
            model.freeData();
        }
    }

    /**
     * 根据传入对象构建查询参数，判断是否存在
     *
     * @param dto 参数
     * @return 存在为true
     */
    @Transactional(readOnly = true)
    public Boolean isExists(CarParkTimeDTO dto) {
        final QueryWrapper<CarParkTime> queryWrapper = createQueryWrapper(dto);
        final boolean exists = super.count(queryWrapper) > 0;
        queryWrapper.clear();
        return exists;
    }

    /**
     * 根据主键判断数据是否存在
     *
     * @param tId 主键
     * @return 存在为true
     */
    @Transactional(readOnly = true)
    public Boolean isExistsById(String tId) {
        boolean exists = false;
        if (StringUtils.hasLength(tId)) {
            final CarParkTime model = getById(tId);
            exists = (null != model);
            if (exists) {
                model.freeData();
            }
        }
        return exists;
    }

    /**
     * 根据主键获取数据
     *
     * @param tId 主键
     * @return 单条记录
     */
    @Transactional(readOnly = true)
    public CarParkTime getById(String tId) {
        final String key = RedisTemplateUtil.getRedisCacheKey(PREFIX_ID, tId);
        return redisTemplateUtil.get(new CacheKey().setKey(key).setTimeout(ConstantDto.REDIS_TIME_OUT_DAY), () -> super.getById(tId), CarParkTime.class);
    }

    /**
     * 根据主键获取数据
     *
     * @param tId 主键
     * @return 单条记录，转换成页面对象
     */
    @Transactional(readOnly = true)
    public CarParkTimeDTO getByIdDto(String tId) {
        return Optional.ofNullable(getById(tId)).map(this::modelToDto).orElse(null);
    }

    /**
     * 根据条件查询单条数据
     *
     * @param dto 查询参数
     * @return 单条记录
     */
    @Transactional(readOnly = true)
    public CarParkTime getOne(CarParkTimeDTO dto) {
        final QueryWrapper<CarParkTime> queryWrapper = createQueryWrapper(dto);
        CarParkTime model = super.getOne(queryWrapper);
        queryWrapper.clear();
        return model;
    }

    /**
     * 根据条件查询单条数据
     *
     * @param dto 查询参数
     * @return 单条记录，转换成页面对象
     */
    @Transactional(readOnly = true)
    public CarParkTimeDTO getOneDto(CarParkTimeDTO dto) {
        return Optional.ofNullable(getOne(dto)).map(this::modelToDto).orElse(null);
    }

    /**
     * 根据条件查询列表数据
     *
     * @param dto 查询参数
     * @return 列表数据
     */
    @Transactional(readOnly = true)
    public List<CarParkTime> getList(CarParkTimeDTO dto) {
        final QueryWrapper<CarParkTime> queryWrapper = createQueryWrapper(dto);
        final List<CarParkTime> list = super.list(queryWrapper);
        queryWrapper.clear();
        return list;
    }

    /**
     * 根据条件查询列表数据
     *
     * @param dto 查询参数
     * @return 列表数据，转换成页面对象
     */
    @Transactional(readOnly = true)
    public List<CarParkTimeDTO> getListDto(CarParkTimeDTO dto) {
        return modelToDtoList(getList(dto));
    }

    /**
     * 分页数据
     *
     * @param page 分页对象
     * @param dto  查询参数
     * @return 分页信息
     */
    @Transactional(readOnly = true)
    public IPage<CarParkTimeDTO> page(Page<CarParkTime> page, CarParkTimeDTO dto) {
        final QueryWrapper<CarParkTime> queryWrapper = createQueryWrapper(dto, "car.");
        final IPage<CarParkTimeDTO> iPage = baseMapper.page(page, queryWrapper);
        queryWrapper.clear();
        return iPage;
    }

    /**
     * 导出Excel
     *
     * @param query 查询条件
     */
    @Transactional(readOnly = true)
    public void export(CarParkTimeDTO query) {
        final ExportPage<CarParkTime, CarParkTimeDTO> exportPage = new ExportPage<>();
        final List<CarParkTimeDTO> list = exportPage.getAllForPage(page -> page(page, query).getRecords());
        try {
            ExcelExport.downloadExcel(response, CarParkTimeDTO.class, () -> list);
        } catch (IOException e) {
            log.error("导出失败", e);
            throw new ApiException("导出失败");
        }
    }

    /**
     * 根据唯一性索引获得数据
     * <p>
     * param pId
     * param startTime
     * param endTime
     *
     * @return 单条数据
     */
    @Transactional(readOnly = true)
    public CarParkTime getUniqueByPId(String pId) {
        final QueryWrapper<CarParkTime> queryWrapper = new QueryWrapper<>();
        queryWrapper.eq("p_id", pId);
        final String key = RedisTemplateUtil.getRedisCacheKey(PREFIX_UNIQUE_PANDA_CAR_PID, pId);
        final CarParkTime model = redisTemplateUtil.get(new CacheKey().setKey(key).setTimeout(ConstantDto.REDIS_TIME_OUT_DAY), () -> super.getOne(queryWrapper, false), CarParkTime.class);
        queryWrapper.clear();
        return model;
    }

    /**
     * 验证唯一性索引
     *
     * @param dto 页面对象
     */
    @Transactional(readOnly = true)
    public void checkUnique(CarParkTimeDTO dto) {
        CarParkTime model = getUniqueByPId(dto.getPId());
        if (null != model) {
            checkUnique(dto, model);
        }
    }

    /**
     * 验证唯一性索引
     *
     * @param dto   页面对象
     * @param model 根据约束字段查询出来的数据库对象
     */
    private void checkUnique(CarParkTimeDTO dto, CarParkTime model) {
        if (!StringUtils.hasLength(dto.getPId())) {
            throw new ApiException("数据已存在，请勿重复添加");
        }
        if (!dto.getPId().equals(model.getPId())) {
            throw new ApiException("数据已存在，请勿重复添加");
        }
    }

    /**
     * 清空缓存
     *
     * @param model 数据库对象
     */
    public void clearCache(CarParkTime model) {
        if (null == model) {
            return;
        }
        String key = RedisTemplateUtil.getRedisCacheKey(PREFIX_ID, model.getTId());
        redisTemplateUtil.deleteByKey(key);
        key = RedisTemplateUtil.getRedisCacheKey(PREFIX_UNIQUE_PANDA_CAR_PID, model.getPId(), model.getStartTime(), model.getEndTime());
        redisTemplateUtil.deleteByKey(key);
    }

    /**
     * 批量清空缓存
     *
     * @param list 数据库对象
     */
    public void clearCaches(List<CarParkTime> list) {
        if (null == list || list.isEmpty()) {
            return;
        }
        List<String> ids = list.stream().map(model -> RedisTemplateUtil.getRedisCacheKey(PREFIX_ID, model.getTId())).collect(toList());
        if (!ids.isEmpty()) {
            redisTemplateUtil.deleteByKey(ids);
            ids.clear();
        }
        Set<String> uniqueIds = list.stream().map(model -> RedisTemplateUtil.getRedisCacheKey(PREFIX_UNIQUE_PANDA_CAR_PID, model.getPId())).collect(toSet());
        if (!uniqueIds.isEmpty()) {
            redisTemplateUtil.deleteByKey(uniqueIds);
            uniqueIds.clear();
        }
    }

    /**
     * 数据库对象转页面对象
     *
     * @param model 数据库对象
     * @return 页面对象
     */
    public CarParkTimeDTO modelToDto(CarParkTime model) {
        if (null == model) {
            return null;
        }
        final CarParkTimeDTO dto = new CarParkTimeDTO();
        dto.setTId(model.getTId());
        dto.setStartTime(model.getStartTime().format(DateTimeFormatter.ISO_TIME));
        dto.setEndTime(model.getEndTime().format(DateTimeFormatter.ISO_TIME));
        dto.setPId(model.getPId());
        buildDisplay(dto);
        return dto;
    }

    /**
     * 页面对象转数据库对象
     *
     * @param dto 页面对象
     * @return 数据库对象
     */
    public CarParkTime dtoToModel(CarParkTimeDTO dto) {
        if (null == dto) {
            return null;
        }
        final CarParkTime model = new CarParkTime();
        model.setTId(dto.getTId());
        if (StringUtils.hasLength(dto.getStartTime())) {
            model.setStartTime(LocalTime.parse(dto.getStartTime(), DateTimeFormatter.ISO_TIME));
        } else {
            log.info("startTime为空,pId:{}", dto.getPId());
        }
        if (StringUtils.hasLength(dto.getEndTime())) {
            model.setEndTime(LocalTime.parse(dto.getEndTime(), DateTimeFormatter.ISO_TIME));
        } else {
            log.info("endTime为空,pId:{}", dto.getPId());
        }
        model.setPId(dto.getPId());
        return model;
    }

    /**
     * 码表转换
     *
     * @param dto 页面对象
     */
    public void buildDisplay(CarParkTimeDTO dto) {

    }

    /**
     * 数据库对象转页面对象
     *
     * @param list 数据库对象
     * @return 页面对象
     */
    public List<CarParkTimeDTO> modelToDtoList(List<CarParkTime> list) {
        return Optional.ofNullable(list).orElse(Collections.emptyList()).stream().map(this::modelToDto).collect(toList());
    }

    /**
     * 页面对象转数据库对象
     *
     * @param list 页面对象
     * @return 数据库对象
     */
    public List<CarParkTime> dtoToModelList(List<CarParkTimeDTO> list) {
        return Optional.ofNullable(list).orElse(Collections.emptyList()).stream().map(this::dtoToModel).collect(toList());
    }

    /**
     * 拼装查询参数，除了主键的其他字段会自动加入进来
     *
     * @param dto 查询参数，不为空的属性会被自动加入
     */
    public QueryWrapper<CarParkTime> createQueryWrapper(CarParkTimeDTO dto) {
        return createQueryWrapper(dto, "");
    }

    /**
     * 拼装查询参数，除了主键的其他字段会自动加入进来
     *
     * @param dto        查询参数，不为空的属性会被自动加入
     * @param tableAlias 表别名
     */
    public QueryWrapper<CarParkTime> createQueryWrapper(CarParkTimeDTO dto, String tableAlias) {
        final QueryWrapper<CarParkTime> queryWrapper = new QueryWrapper<>();
        if (null != dto) {
            if (StringUtils.hasLength(tableAlias)) {
                if (tableAlias.charAt(tableAlias.length() - 1) != '.') {
                    tableAlias += ".";
                }
            }
            if (StringUtils.hasLength(dto.getPId())) {
                queryWrapper.eq(tableAlias + "p_id", dto.getPId());
            }
        }
        return queryWrapper;
    }

    /**
     * 批量检查主键在数据库中是否存在
     *
     * @param ids 主键集合
     */
    public List<CarParkTime> checkIds(List<String> ids) {
        if (null == ids || ids.isEmpty()) {
            throw new ApiException("ids不能为空");
        }
        final List<CarParkTime> list = super.listByIds(ids);
        if (list.isEmpty()) {
            throw new ApiException("ids不存在" + Arrays.toString(ids.toArray()));
        }
        if (ids.size() == list.size()) {
            return list;
        }
        List<String> dbIds = list.stream().map(CarParkTime::getTId).collect(toList());
        final List<String> notExistsList = ids.stream().filter(id -> !dbIds.contains(id)).collect(toList());
        dbIds.clear();
        if (!notExistsList.isEmpty()) {
            throw new ApiException("ids不存在" + Arrays.toString(notExistsList.toArray()));
        }
        return list;
    }
}